Overview and Indications

Radiation therapy is used to fight many types of cancer. Sometimes, radiation is the only treatment needed. It may also be used to shrink a tumor as much as possible before surgery, help prevent the cancer from coming back after surgery or chemotherapy, relieve symptoms caused by a tumor and/or treat cancers that cannot be removed with surgery. Radiation therapy is a cancer treatment that uses high-energy radiation to kill cancer cells. Radiation may be delivered by a machine or from radioactive material placed in the body (brachytherapy).

Radiation therapy offered at the USC Norris Comprehensive Cancer Center includes 3-D conformal radiotherapy (3-D CRT), Intensity Modulated Radiation Therapy (IMRT), Image Guided Radiation Therapy (IGRT), CyberKnife® Stereotactic Radiosurgery, Gamma Knife® Stereotactic Radiosurgery (SRS) to the brain, clinical brachytherapy utilizing high dose-rate (HDR), episcleral eye plaque brachytherapy, RapidArc or VMAT treatment delivery and Stereotactic Body Radiation Therapy (SBRT) to multiple disease sites.

For more information on our radiation oncology services, click here.

For more detailed information on radiation therapy, click here to view our online health library.